Files
sunnypilot/selfdrive/controls/lib/drive_helpers.py
Harald Schäfer 8743bc4fe2 Null Pointer Model (#34111)
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* Clip curvature to reasonable limits

* Better curvature and speed clips

* typo

* typo

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* ref commit

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Co-authored-by: Yassine <yassine.y10@gmail.com>
2024-12-13 19:14:21 -08:00

32 lines
1.1 KiB
Python

from cereal import log
from openpilot.common.numpy_fast import clip
from openpilot.common.realtime import DT_CTRL
MIN_SPEED = 1.0
CONTROL_N = 17
CAR_ROTATION_RADIUS = 0.0
# This is a turn radius smaller than most cars can achieve
MAX_CURVATURE = 0.2
# EU guidelines
MAX_LATERAL_JERK = 5.0
MAX_VEL_ERR = 5.0
def clip_curvature(v_ego, prev_curvature, new_curvature):
new_curvature = clip(new_curvature, -MAX_CURVATURE, MAX_CURVATURE)
v_ego = max(MIN_SPEED, v_ego)
max_curvature_rate = MAX_LATERAL_JERK / (v_ego**2) # inexact calculation, check https://github.com/commaai/openpilot/pull/24755
safe_desired_curvature = clip(new_curvature,
prev_curvature - max_curvature_rate * DT_CTRL,
prev_curvature + max_curvature_rate * DT_CTRL)
return safe_desired_curvature
def get_speed_error(modelV2: log.ModelDataV2, v_ego: float) -> float:
# ToDo: Try relative error, and absolute speed
if len(modelV2.temporalPose.trans):
vel_err = clip(modelV2.temporalPose.trans[0] - v_ego, -MAX_VEL_ERR, MAX_VEL_ERR)
return float(vel_err)
return 0.0